Have you ever heard of aerial perspective? Sometimes, while staring far into the distance, you will notice that the further your eyes wander, the hazier the landscape looks. This is an effect due to the moisture contained in the air. Aerial perspective is a way of expressing the light refraction due to the atmosphere, and the colors getting progressively hazier. The same landscape can look way different according to the weather. When it's sunnier, it might look clearer. When it's humid, it might look hazy. Maybe you're subconsciously using aerial perspective when you're drawing backgrounds!
Today we feature a number of illustrations drawn using aerial perspective. They will really make you think about the influence that air layers have on different scenery! Enjoy.